If you have the homebrew channel installed with backup launcher you should be able to play the game. You should be able to go to homebrew channel, insert the game cd and launch backup loader. I am assuming you have appropriate version of CIOS installer installed as well. Basically CIOS installer will dongrade your wii version to 3.2 as that's the version compatible with backup loader. Google the net and you will be able to find loads of info on CIOS installer and how to install it on wii via SD card.
The only other thing you need to do is to copy Ashes cricket profile from the net. Do a search and you will find it. Copy it on the SD card and use it when you launch the game. For some reason you can't create a profile when you are playing the game using backup loader. As a result you have to get an existing profile from the net which the game should be able to recognize. Simply modify the profile to store/save your settings and you are done! Again you can find detailed info on the net.